Pencil-shaped pen point for self-filling pens



A. J. KOEPSELL PENCIL SHAPED PEN POI NT FOR SELF FILLING PENS Filed Sept. 20. 922

Patents Wlay l3, i924.

AUGUST J. KOEPSELL, 0F MAYVILLE, WISGONSIN.

PENGIL-SHAPED PEN POINT FOR SELF-RING PENS.

Application filed september 20, 1922. Serial m. 589,419.

To all whom it may concern:

Be it known that 1, AUGUST J. KonPsnLL, a citizen of the United States, residing at Mayville, in the county of Dodge and State of Wisconsin, have invented certain new and useful Improvements in Pencil-Shaped Pen Points for Self-Filling Pens, of which the followin is a specification, reference being had to the accompanying drawings.

The present invention has for its purpose the provision of a pencil shaped pen point particularly adapted for use in connection with the self-filling pen illustrated, described and claimed in my copending application 589,420 filed the 20th day of Sep tember, 1922.

Another purpose is to provide a pencil shaped pen point provided with a plurality of passages, certain of which extend from a transversely drilled opening to the rear end of the pen point to communicate with a Writing fluid containing chamber, certain others of which extending from points oilset from the transversely drilled opening to the rear end of the pen point, there being means in the passages to permit the Writing fluid to seep through gradually, and to prevent the discharge of the writing fluid in large quantities.

Another purpose is to provide a encushaped pen point having longitudinally extending ducts formed therein, these ducts being filled with a fibrous material which will prevent the discharge of the Writing fluid in large quantities yet permit the fluid to flow gradually to the point of the pen.

Still another purpose is the provision of a pencil shaped pen point, which is made up of a plurality of sections cemented together, and subsequently turned down, so as to provide a pen point having a pencil shaped end, and a body, to be inserted into the barrel of a self-filling pen.

In order to construct the point with the plurality of passages, the point is made up from sections which are cemented together, the confronting faces of which have chan nels or grooves, which when the sections are cemented together, form cylindrical assages, through which the writing luid passes, said passages having fillers of some suitable fibrous material, to permit the writ-- ing fluid to seep through as needed and yet prevent a heavy discharge of the fluid.

A further purpose is the provision of a pencil shaped pen point provided with incisions in the form of channels in the tapered end of the point, so that when the writing fluid seeps through certain of the passages, it will travel the grooves or channels and collect in the transverse opening adjacent the extremity of the pen point.

It is to be understood that the particulars herein given are in no way limitative and that while still keeping within the scope of the invention, any desired modifications of detail and desired proportions may be made in the apparatus according to circumstances. I

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

in the drawings Fi ure 1 is a view showing one end of a selflling pen, showing the improved pencil shaped point as applied;

Figure 2'is a sectional View through the pencil shaped pen point;

igure 3 is a cross sectional view on line 3-3 of Figure 2;

Figure- 4 is a perspective view of a pair ofstrips of the necessary proportions with grooves in their adjacent faces, to constitute the core of the pen point;

Figure 5 is a perspective view similar to Figure 4, showing additional strips fastened to the core strips and overlying each other, and showing the second step in the construction of the pencil shaped pen point;

Referring to the drawings, 1 designates the pencil shaped pen point, which has a cylindrical portion 2 at one end. The extrernity of the cylindrical portion is can teriorly threaded as at 3, for engagement with the threads of one section of the barrel or" the self-filling pen t (which is detailed in said copending ap lication). The pen point beyond the cylindrical portion is turned down to a conical pencil shaped portion 5, adjacent the extremity of which a transverse opening 6 is drilled. In fact the shape of the writing end of the pen point is substantially frusto-conical, there being a bulge as at 7, adjacent where the cylindrical portion merges into the frusto-conical portion.

The hereto-conical portion is provided with a series of longitudinally extending channels or grooves 8, which terminate adjacent the transversely formed opening 6, for the purpose of conveying the writing fluid thereto.

In order to construct this pencil shaped pen point with the passages formed therethrough, it is first necessary to cement two strips together as shown in Figure 1. These strips 9 constitute the core of the pencil shaped pen point, and their adjacent faces have grooves or channels 10, which, when the strips 9 are cemented together form central passages 11.

Additional strips 12 are cemented to the outer faces and edges of the strips 9, in such wise that certain of the longitudinal edges of the strips 12 may overlap the edges of the adjacent strips. The overlapping portions of the strips 12 are also cemented together. The faces of the strips 12 which are cemented or otherwise fastened to the strips 9, and the outer faces and edges of the strips 9 have registering grooves 13, which, when the strips 12 are cemented in place, constitute longitudinal passages 14. These passages 14 terminate a short distance from the transverse opening 6 and therefore open into the channels or grooves 8. These passages 10 and 1 1 are filled with any suitable porous and fibrous material 15, which will permit writing fluid to seep from the chamber of the self-filling pen to the extremity of the pencil shaped en point, or to the transverse opening 6, but will prevent heavy discharges of the fluid.

After the strips are cemented together as 1 shown, the bod as so constructed is placed in a suitable lat e and it is then turned down, so as to provide a pencil shaped pen point of a finished construction, as in Figure 1. It is obvious that the strips may be made of any suitable material, such as shell, ivory, celluloid, glass, metal or the like, preferably either shell, ivory or celluloid, as these materials possess a certain degree of flexibility, which will involve advantages over the others. The flexibility of the material of which the pencil sha ed pen point may be constructed aids the Bow of the writing fluid, while the pen or pencil is in operation.

While metal might be used to form the pen point, it would be liable to scratch and dig into the paper and I have found in actual practice that it is not as efficient, therefore, as a material for en points. as celluloid, glass, ivory or the like Y The invention having been set forth, what is claimed is 1. A pencil-shaped pen point tapered toward its writing extremity and formed with exterior grooves extending toward the extremity, the point being formed with longitudinally extending passages opening upon said grooves, and fibrous material disposed in said passages.

2. A pencil shaped pen point provided adjacent its extremity with a transverse opening and having longitudinally extending passages terminating adjacent said opening, and a filler of fibrous material in said passages, the body of said pen point having a frusto-conical portion provided with channels, said body having additional passages terminating in bottoms of said channels a short distance from said transverse opening.

3. In a pencil shaped pen point, a body provided with a cylindrical portion at one end and a frusto-conical portion at its other end, the latter end being provided with a transverse opening near its extremity, and a plurality of passages formed through the body and terminating adjacent said transverse opening.

4. In a pencil shaped pen point, a body provided with a cylindrical portion at one end and a frust-conical portion at its other end, the latter end being provided with a transverse opening near its extremity, and a plurality of passages formed through the body and terminating adjacent said transverse opening, the outer face of the frusto-conica-l portion having a plurality of longitudinal channels, said body having a plurality of additional passages formed therethrough and terminating midway of the channels.

In testimony whereof I hereunto afiix my signature.

AUGUST J. KOEPSELL. 

